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A collaborative transmission method for frequency control array base stations for high-speed mobile users

A cooperative transmission and high-speed mobile technology, applied in the field of communication, can solve problems such as high implementation costs

Active Publication Date: 2021-04-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the beam shape of the phased array does not change with time, the existing method using the phased array needs to constantly change the parameters of the phase shifter to ensure that the beam is concentrated on the target user position, thereby providing continuous and effective services, making the implementation cost high

Method used

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  • A collaborative transmission method for frequency control array base stations for high-speed mobile users
  • A collaborative transmission method for frequency control array base stations for high-speed mobile users
  • A collaborative transmission method for frequency control array base stations for high-speed mobile users

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Embodiment

[0045] Such as figure 1 As shown, the present invention provides a frequency control array base station cooperative transmission method for high-speed mobile users, and its implementation method is as follows:

[0046] S1. Randomly initialize the frequency control array frequencies and base station activation parameters carried by K base stations And let i=1, k=1, m=1, wherein, m is the mth antenna, i is the number of iterations, K is the number of base stations, is a vector with M rows and 1 column composed of the respective frequencies of the M antennas of the k-th base station, b k is the control parameter of the activation state of the kth base station, and b k ≥0, M is the number of antennas of a base station;

[0047] S2. According to the frequency control array at t s Beam gain at any time, calculate and get the item cos[2π(f k,m τ k,m,s -f l,n τ l,n,s )] derivative of and determine the derivative Whether it is not equal to zero, if so, then enter step S...

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Abstract

The present invention provides a cooperative transmission method for frequency control array base stations oriented to high-speed mobile users. By designing the frequency offset of the frequency control array, the present invention makes the peak value of the generated beam move along with the high-speed user's motion trajectory, and the maximum value within a certain period of time The average beam gain of the user is maximized, which has a higher quality of service than the phased array waveform that does not change with time; the present invention balances the quality of service and the maintenance cost of the base station by optimizing the activation of the base station, and chooses to activate the base station while reducing the maintenance cost of the base station base stations, which leads to better quality of service than randomly activated base stations. The invention utilizes the time dependence of the frequency control array, optimizes the design of the frequency offset of the frequency control array and activates the base station, realizes that the peak value of the beam automatically moves along with the trajectory of the high-speed user, and improves the service quality. At the same time, the implementation cost is reduced and the maintenance cost of the base station is balanced.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a frequency control array base station cooperative transmission method for high-speed mobile users. Background technique [0002] Millimeter waves with abundant available spectrum resources are an effective choice for next-generation wireless communications. However, compared with low-frequency communication, the greater path transmission loss leads to millimeter-wave communication with high directional transmission characteristics, and array technology is often used to compensate for transmission loss, thereby achieving the purpose of improving communication quality. In the face of high-speed users with fixed and known trajectories, such as rail transit systems such as bullet trains and high-speed rail, most of the existing methods to improve user communication quality use phased arrays. By designing the parameters of the phase shifter, there is a phase between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/022
CPCH04B7/022
Inventor 吴薛晗林静然邵怀宗利强
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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